Gardening in Alberta

Everything we have worked out for Alberta: what to plant and when, which varieties finish in time, the pests that actually turn up here, and the jobs that pay off month by month. We also cover the rest of the property, from lawns and soil to home care and energy, because a garden rarely stops at the vegetable bed.

The numbers first, because everything else follows from them. Measured at the weather station in Calgary, the last spring freeze falls around May 21 and the first fall freeze falls around September 16, 1,171 growing degree days in the year.

That is little accumulated warmth: tomatoes need a tunnel or a greenhouse here, whatever the frost dates suggest. Garlic does well: 39.1 weeks below 40 °F, comfortably past the six it needs to form a proper head.

Elsewhere on the property in Alberta: the pests that turn up here.

Figures from Environment and Climate Change Canada. A state is not one climate: elevation, a large lake or the coast can move these dates by two weeks either way, so check your own county with the extension service before you spend money.

Protecting Roses Through a Alberta Winter

A fully bloomed pink rose with visible insects crawling on its petals, displayed on weathered gray wood with a green leaf nearby.

Yes, but the “why” matters more than the “yes.” Alberta’s Canadian hardiness zone runs cold enough that most garden roses need a physical barrier between…

What Do Homes in Alberta Cool With?

What Do Homes in Alberta Cool With?

Just 57.2% of Prairie region households run any air conditioning at all, according to Statistics Canada, against 68.3% across Canada as a whole.

Roses That Hold Up in Alberta

A fully bloomed pink rose with visible insects crawling on its petals, displayed on weathered gray wood with a green leaf nearby.

Roses that survive an Alberta winter are almost always own-root shrub roses bred specifically for prairie cold, not grafted hybrid teas from a warmer…

When to Prune Roses in Alberta

A pink full-bloom rose glistens with morning dew in a lush garden setting with a weathered wooden fence in the background.

Prune roses in Alberta in spring, once you can see live green or reddish buds swelling on the canes, typically from mid-April into early May depending on…